Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application

The experiment was conducted to assess the effects of nitrogen (N) rate and time of application on N use efficiency (NUE) of bread wheat, and their association with grain yield and protein content. Factorial combinations of four N levels, two bread wheat varieties and three timings of N applications...

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Autores principales:	Haile,D, Nigussie,D, Ayana,A
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2012
Materias:	Grain yeild protein variety uptake utilization biomass production
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000300002
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spelling	oai:scielo:S0718-951620120003000022014-03-10Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of applicationHaile,DNigussie,DAyana,A Grain yeild protein variety uptake utilization biomass production The experiment was conducted to assess the effects of nitrogen (N) rate and time of application on N use efficiency (NUE) of bread wheat, and their association with grain yield and protein content. Factorial combinations of four N levels, two bread wheat varieties and three timings of N applications were laid out in a randomized complete block design. N rate significantly influenced grain yield, protein content, N uptake efficiency, N biomass production efficiency, N utilization efficiency, N use efficiency for grain and N use efficiency for protein yield. Time of N application had highly significant effect on grain yield, protein content and NUE traits. Rate of N application and variety were significantly interacted to influence grain yield. Grain yield for Madda Walabu found sharply increase with each increase in N application rate. The improved variety provided significantly higher grain yield, N utilization efficiency and N use efficiency for grain yield (NUEGY) when N was applied 1/4 at planting, 1/2 at mid-tillering, and 1/4 at anthesis. Variations in NUEGY were explained more by the variations in N uptake efficiency. Harvest index contribution to NUEGY was higher for the local variety. Although NUE significantly decreased with increasing N rates, yield response of the varieties did not plateau out.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.12 n.3 20122012-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000300002en10.4067/S0718-95162012005000002
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Grain yeild protein variety uptake utilization biomass production
spellingShingle	Grain yeild protein variety uptake utilization biomass production Haile,D Nigussie,D Ayana,A Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
description	The experiment was conducted to assess the effects of nitrogen (N) rate and time of application on N use efficiency (NUE) of bread wheat, and their association with grain yield and protein content. Factorial combinations of four N levels, two bread wheat varieties and three timings of N applications were laid out in a randomized complete block design. N rate significantly influenced grain yield, protein content, N uptake efficiency, N biomass production efficiency, N utilization efficiency, N use efficiency for grain and N use efficiency for protein yield. Time of N application had highly significant effect on grain yield, protein content and NUE traits. Rate of N application and variety were significantly interacted to influence grain yield. Grain yield for Madda Walabu found sharply increase with each increase in N application rate. The improved variety provided significantly higher grain yield, N utilization efficiency and N use efficiency for grain yield (NUEGY) when N was applied 1/4 at planting, 1/2 at mid-tillering, and 1/4 at anthesis. Variations in NUEGY were explained more by the variations in N uptake efficiency. Harvest index contribution to NUEGY was higher for the local variety. Although NUE significantly decreased with increasing N rates, yield response of the varieties did not plateau out.
author	Haile,D Nigussie,D Ayana,A
author_facet	Haile,D Nigussie,D Ayana,A
author_sort	Haile,D
title	Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
title_short	Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
title_full	Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
title_fullStr	Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
title_full_unstemmed	Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application
title_sort	nitrogen use efficiency of bread wheat: effects of nitrogen rate and time of application
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2012
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162012000300002
work_keys_str_mv	AT hailed nitrogenuseefficiencyofbreadwheateffectsofnitrogenrateandtimeofapplication AT nigussied nitrogenuseefficiencyofbreadwheateffectsofnitrogenrateandtimeofapplication AT ayanaa nitrogenuseefficiencyofbreadwheateffectsofnitrogenrateandtimeofapplication
_version_	1714206432601047040

Nitrogen use efficiency of bread wheat: Effects of nitrogen rate and time of application

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